/*!	 layer_group.h
**	 Header file for implementation of the "Group" layer
**
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**	Copyright (c) 2007, 2008 Chris Moore
**	Copyright (c) 2012-2013 Carlos López
**	......... ... 2014 Ivan Mahonin
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
*/

#ifndef __SYNFIG_LAYER_GROUP_H
#define __SYNFIG_LAYER_GROUP_H

#include "layer_pastecanvas.h"

namespace synfig
{
/*!	\class Layer_Group
**	 Class of the Group layer.
*/
class Layer_Group : public Layer_PasteCanvas
{
    // Layer module: defines the needed members to belong to a layer's factory.
    SYNFIG_LAYER_MODULE_EXT
private:
    // Parameter: (bool) Z_Depth Range is active
    ValueBase param_z_range;
    // Parameter: (Real) Z_Depth Range position
    ValueBase param_z_range_position;
    // Parameter: (Real) Z_Depth Range depth
    ValueBase param_z_range_depth;
    // Parameter: (Real) Z_Depth Range transition
    ValueBase param_z_range_blur;

public:
    // Default constructor
    Layer_Group();
    // Destructor
    virtual ~Layer_Group();
    // Returns a string with the localized name of this layer
    virtual String get_local_name()const;

    //	Sets the parameter described by \a param to \a value. \see Layer::set_param
    virtual bool set_param(const String & param, const synfig::ValueBase &value);
    // Get the value of the specified parameter. \see Layer::get_param
    virtual ValueBase get_param(const String & param)const;
    // Gets the parameter vocabulary
    virtual Vocab get_param_vocab()const;

    // Sets z_range* fields of specified ContextParams \a cp
    virtual void apply_z_range_to_params(ContextParams &cp)const;
}; // END of class Layer_Group

}; // END of namespace synfig

#endif